Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- Fix
- Fixed in 10.0.14393.9418, 10.0.17763.9121, 10.0.19044.7663, 10.0.19045.7663, 10.0.22631.7517, and 7 more
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: active
- Automatable: no
- Technical impact: total
Summary
The Windows Ancillary Function Driver for WinSock, a core Windows networking component, is affected by this flaw. An authorized local attacker could exploit it to gain higher privileges on the affected system.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Timeline
- CISA SSVC assessment
Exploitation: active · Automatable: no · Technical impact: total
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- CVE published
- CISA remediation deadline
Due date for US federal agencies to patch
- Record last updated
Affected versions
- Microsoft Windows 10 Version 1607
From 10.0.14393.0 · fixed in 10.0.14393.9418
- Microsoft Windows 10 Version 1809
From 10.0.17763.0 · fixed in 10.0.17763.9121
- Microsoft Windows 10 Version 21H2
From 10.0.19044.0 · fixed in 10.0.19044.7663
- Microsoft Windows 10 Version 22H2
From 10.0.19045.0 · fixed in 10.0.19045.7663
- Microsoft Windows 11 version 23H2
From 10.0.22631.0 · fixed in 10.0.22631.7517
- Microsoft Windows 11 Version 23H2
From 10.0.22631.0 · fixed in 10.0.22631.7517
- Microsoft Windows 11 Version 24H2
From 10.0.26100.0 · fixed in 10.0.26100.9168
- Microsoft Windows 11 Version 25H2
From 10.0.26200.0 · fixed in 10.0.26200.9168
- Microsoft Windows 11 version 26H1
From 10.0.28000.0 · fixed in 10.0.28000.2704
- Microsoft Windows Server 2012
From 6.2.9200.0 · fixed in 6.2.9200.26280
- Microsoft Windows Server 2012 (Server Core installation)
From 6.2.9200.0 · fixed in 6.2.9200.26280
- Microsoft Windows Server 2012 R2
From 6.3.9600.0 · fixed in 6.3.9600.23338
- Microsoft Windows Server 2012 R2 (Server Core installation)
From 6.3.9600.0 · fixed in 6.3.9600.23338
- Microsoft Windows Server 2016
From 10.0.14393.0 · fixed in 10.0.14393.9418
- Microsoft Windows Server 2016 (Server Core installation)
From 10.0.14393.0 · fixed in 10.0.14393.9418
- Microsoft Windows Server 2019
From 10.0.17763.0 · fixed in 10.0.17763.9121
- Microsoft Windows Server 2019 (Server Core installation)
From 10.0.17763.0 · fixed in 10.0.17763.9121
- Microsoft Windows Server 2022
From 10.0.20348.0 · fixed in 10.0.20348.5499
- Microsoft Windows Server 2025
From 10.0.26100.0 · fixed in 10.0.26100.33296
- Microsoft Windows Server 2025 (Server Core installation)
From 10.0.26100.0 · fixed in 10.0.26100.33296